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How To Use John Guest Push-on Fittings

Article by Peter Smith - Caravans Plus

Push-on fittings are very quick to use, and even re-use, but you should read this section to ensure every connection is perfect.

Step 1 - Prepare the connection

Pipe colour is used for identification only, Red and Blue have identical properties. Black is also available and is UV stabilised.

How To Use John Guest Push-on Fittings

Cut the pipe square ensuring it is free of score marks.

How To Use John Guest Push-on Fittings

Do NOT use a hacksaw

How To Use John Guest Push-on Fittings
To avoid damage to the O-ring, make sure burrs and sharp edges are removed.

How To Use John Guest Push-on Fittings
With the fitting clean and undamaged and the pipe cut square, you are now ready to make the connection.

Do not insert fingers into the fitting as the stainless steel teeth may cause injury.

Step 2 - Assemble the connection

How To Use John Guest Push-on Fittings

For pipe used with HOT water (usually red) you need to use a Pipe Support Insert. Cold water pipes do not require the insert.

How To Use John Guest Push-on Fittings

Push the pipe into the fitting, to the pipe stop (about 6mm).

How To Use John Guest Push-on Fittings
Pull outward to check it is secure. The collet (gripper) has stainless steel teeth which hold the pipe firmly in position whilst the 'O' Ring provides a permanent leak proof seal.

How To Use John Guest Push-on Fittings
An optional Locking Clip (shown red) and Collet Cover is available to ensure the fitting will not part in extreme conditions. The clip is essential if the fitting and pipe do not align naturally.

The cover is placed on the pipe prior to joining. After pipe is in the fitting the red clip in pushed into the gap, and the snap fitting cover makes a tidy and 100% secure fitting.

Disconnecting standard push-on fittings

How To Use John Guest Push-on Fittings
Ensure system is depressurised before removing fittings. Push in the collet against the face of the fitting. If the red clip is installed, it needs to be removed first.

With the collet held in this position the pipe can be removed. The fitting can then be re-used.


Click on the links below for our full range of push-on fittings

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8 Comments

  • comment-avatar

    Byron

    Very helpful

  • comment-avatar

    David

    quite helpful

  • comment-avatar

    Terry

    The push in collet has broken on my fitting and I am having difficulty taking out the poly pipe. Any thoughts how I can rectify this. Thanks Terry

  • comment-avatar

    Bob

    I have a River caravan that has chinese water pipes both hot and cold. I note that your comments regarding inserts are only required for hot water pipes. Perhaps you may like to add for those that have unknowingly bought a caravan with cheap chinese pipes that inserts are required for both hot and cold. I have had 1 hot and 3 cold water pipes "let go " of the connectors. I found that none had inserts and that all my pipes have to be taken off and replaced with Guest piping and inserts. A warning to your customers that owners of newer caravans may face the same problem. Also the cheap pipes will actually split over time. Regards Bob

  • comment-avatar

    Dave

    very helpful

  • comment-avatar

    Kevin

    I put inserts in both as I have had both hot and cold water pipes blow out on me.

  • comment-avatar

    Andy

    Bloody Oath, I thought I had to buy new ones to fault find , but I can reuse. Cheers.

  • comment-avatar

    Rodney

    The inserts have expanded the pipe so the that it wont fit into the coupling I am pushing as hard as I can and wont budge, If I take out the Colette can I file it thinner. Any other ideas

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